/* ============================================================
   CONCEPT B — Charcoal OS · Inn8 Tec Design Lab
   Exploration only, never deploy.
   Composition layer ONLY — colours come from tokens.css,
   type from type.css, components from components.css.
   No raw hex anywhere in this file.
   ============================================================ */

/* ---- Page-level behaviour ---- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

/* Premium polish (R2.3): anchored sections clear the sticky nav;
   selection inverts to the system's ink; no grey tap flash on touch. */
[id] { scroll-margin-top: calc(64px + var(--space-6)); }
::selection { background: var(--ink); color: var(--bg); }
html { -webkit-tap-highlight-color: transparent; }

a:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---- Nav composition ---- */
.nav .wordmark { font-size: var(--text-lg); }
.nav-links { display: none; }
@media (min-width: 820px) { .nav-links { display: flex; } }

/* ============================================================
   SECTION ANNOTATION — the system voice.
   Hairline bar: eyebrow left, telemetry top-right.
   ============================================================ */
.sec-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
}
.sec-title {
  margin-top: var(--space-10);
  max-width: 24ch;
}
.sec-body {
  margin-top: var(--space-6);
  max-width: 52ch;
}
.closer {
  margin-top: var(--space-16);
  font-size: var(--text-xl);
  font-weight: 650;
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-snug);
  max-width: 36ch;
  text-wrap: balance;
}

/* ============================================================
   HERO — split asymmetric: copy left, system console right.
   Faint engineering grid behind the hero only.
   ============================================================ */
.hero {
  padding-block: var(--space-20) var(--space-32);
  overflow: hidden;
}
.ops-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  -webkit-mask: radial-gradient(85% 90% at 68% 12%, rgba(0, 0, 0, 1) 30%, transparent 100%);
          mask: radial-gradient(85% 90% at 68% 12%, rgba(0, 0, 0, 1) 30%, transparent 100%);
  pointer-events: none;
}
.hero .container { position: relative; }

.hero-annot {
  display: flex;
  justify-content: flex-end;
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-16);
}

.hero-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-16);
  align-items: center;
}
@media (min-width: 980px) {
  .hero-split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--space-20); }
}
.hero-copy .lead { margin-top: var(--space-6); max-width: 46ch; }
.hero-copy .display { margin-top: var(--space-5); }
.hero-ctas {
  margin-top: var(--space-10);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ============================================================
   SYSTEM CONSOLE — elevated card rendered as a live ops feed.
   ============================================================ */
.console {
  margin: 0;                       /* figure reset */
  padding: 0;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.console:hover {                   /* a console is not a link */
  transform: none;
  box-shadow: var(--shadow-lg);
  border-color: var(--border);
}
.console-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.console-status { display: inline-flex; align-items: center; gap: var(--space-2); }

.console-feed { list-style: none; margin: 0; padding: 0; }
.console-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--border);
}
.console-row:first-child { border-top: 0; }
.console-row .dot { margin-top: 6px; }
.console-line {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  max-width: none;
}
.console-time { color: var(--muted); }
.console-event { color: var(--ink); font-weight: 600; }
.console-idle { background: color-mix(in srgb, var(--surface-2) 55%, transparent); }

/* Status dots — never the only carrier of meaning */
.dot {
  display: inline-block;
  flex: none;
  width: 6px; height: 6px;
  border-radius: var(--radius-full);
  background: var(--muted);
}
.dot-ink { background: var(--ink); }
.cursor {
  display: inline-block;
  width: 7px; height: 12px;
  margin-left: var(--space-2);
  vertical-align: -1px;
  background: var(--muted);
}
@media (prefers-reduced-motion: no-preference) {
  .dot-live, .cursor {
    animation: charcoal-pulse 2.6s var(--ease) infinite;
  }
  @keyframes charcoal-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.35; }
  }
}

/* ============================================================
   PROBLEM — leaks as a 2×2 grid of quiet tiles, L-01 leads.
   ============================================================ */
.leak-grid {
  list-style: none;
  margin: var(--space-12) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}
@media (min-width: 720px) { .leak-grid { grid-template-columns: 1fr 1fr; } }
.leak {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
}
.leak-index {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: var(--space-6);
}
.leak-copy {
  font-size: var(--text-lg);
  font-weight: 550;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-heading);
  max-width: 30ch;
}
.leak-sub { color: var(--muted); font-weight: 450; }
.leak-lead {
  background: var(--surface);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.leak-lead .leak-copy { font-size: var(--text-xl); max-width: 26ch; }

/* ============================================================
   SYSTEM — five stages as one connected pipeline.
   Mobile: vertical track. Desktop: one horizontal hairline.
   ============================================================ */
.pipeline {
  list-style: none;
  margin: var(--space-20) 0 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: var(--space-10);
}
.pipeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--border-strong);
}
.pl-stage { position: relative; padding-left: var(--space-8); }
.pl-node {
  position: absolute;
  left: 0;
  top: 5px;
  width: 11px; height: 11px;
  border-radius: var(--radius-xs);
  background: var(--bg);
  border: 1px solid var(--border-strong);
}
.pl-first .pl-node { background: var(--ink); border-color: var(--ink); }
.pl-index {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.pl-name {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: var(--tracking-heading);
}
@media (min-width: 860px) {
  .pipeline { grid-template-columns: repeat(5, 1fr); gap: var(--space-6); }
  .pipeline::before {
    left: 0; right: 0;
    top: 5px; bottom: auto;
    width: auto; height: 1px;
  }
  .pl-stage { padding-left: 0; padding-top: var(--space-8); }
  .pl-node { top: 0; }
}

/* ============================================================
   WORKFORCE — server-rack module rows, MOD-01 emphasised.
   ============================================================ */
.modules { margin-top: var(--space-12); border-top: 1px solid var(--border); }
.module {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--border);
}
@media (min-width: 900px) {
  .module {
    grid-template-columns: 12rem 11rem minmax(0, 1fr);
    gap: var(--space-6);
    align-items: baseline;
  }
}
.module-id {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.module-name {
  font-size: var(--text-xl);
  font-weight: 750;
  letter-spacing: var(--tracking-heading);
}
.module-title { display: grid; gap: var(--space-1); }
.module-role {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--muted);
  max-width: 18ch;
}
.module-copy { color: var(--muted); max-width: 52ch; }
.module-lead {
  background: var(--surface);
  padding-inline: var(--space-6);
  margin-inline: calc(var(--space-6) * -1);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.module-lead .module-copy { color: var(--ink); }
.module-note { margin-top: var(--space-8); }

/* ============================================================
   CONNECTS — five hairline-topped spec columns (no track:
   deliberately distinct from the pipeline above).
   ============================================================ */
.steps {
  list-style: none;
  margin: var(--space-16) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-10) var(--space-6);
}
.step { border-top: 1px solid var(--border-strong); padding-top: var(--space-4); }
.step-index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.step-name {
  margin-top: var(--space-2);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: var(--tracking-heading);
}
.step p {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--muted);
  max-width: 28ch;
}

/* ============================================================
   RESULTS — full-bleed stat strip on --surface,
   hairline column separators, large tabular numerals.
   ============================================================ */
.results-strip {
  background: var(--surface);
  border-block: 1px solid var(--border);
}
.results-grid {
  margin-top: var(--space-16);
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.result-cell { padding: var(--space-6) var(--space-6) var(--space-6) 0; }
.result-cell:nth-child(even) {
  border-left: 1px solid var(--border);
  padding-left: var(--space-6);
}
.result-cell:nth-child(n+3) { border-top: 1px solid var(--border); }
.result-value {
  font-size: clamp(2.6rem, 3.2vw + 1rem, 4.2rem);
  font-weight: 800;
  letter-spacing: var(--tracking-display);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.result-label {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--muted);
  max-width: 22ch;
}
@media (min-width: 900px) {
  .results-grid { grid-template-columns: repeat(4, 1fr); }
  .result-cell { padding: var(--space-8) var(--space-8) var(--space-8) 0; }
  .result-cell:not(:first-child) {
    border-left: 1px solid var(--border);
    padding-left: var(--space-8);
  }
  .result-cell:nth-child(n+3) { border-top: 0; }
}
.results-strip .closer { margin-top: var(--space-16); }

/* ============================================================
   BOOK — the only fully-centered beat on the page.
   Narrow column (~560px) on an elevated surface.
   ============================================================ */
.book-wrap {
  max-width: 560px;
  margin: var(--space-16) auto 0;
  text-align: center;
}
.book-wrap h2 { max-width: 20ch; margin-inline: auto; }
.book-wrap .lead { margin: var(--space-6) auto 0; }
.book-panel {
  margin-top: var(--space-12);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  box-shadow: var(--shadow-lg);
  text-align: left;
}
.book-form { display: grid; gap: var(--space-5); }
.book-form .btn { width: 100%; margin-top: var(--space-2); }
.book-alt {
  margin: var(--space-8) auto 0;
  font-size: var(--text-sm);
  color: var(--muted);
}
.book-alt a { color: var(--ink); text-decoration: none; }
.book-alt a:hover { text-decoration: underline; }
@media (max-width: 480px) {
  .book-panel { padding: var(--space-6); }
}

/* ============================================================
   THE ENGINE ROOM (SYS 03) — the living operating system.
   Not an infographic: wires are drawn from real layout, pulses
   travel them, and hover lights pathways. Monochrome only.
   ============================================================ */
.engine { position: relative; margin-top: var(--space-16); }
/* stage illumination — a faint pool of light behind the system, centred on the core */
.engine::before {
  content: "";
  position: absolute; inset: -8% -4%;
  background: radial-gradient(ellipse 46% 55% at 50% 50%, color-mix(in srgb, var(--ink) 3%, transparent), transparent 72%);
  pointer-events: none;
}
.engine-eight {
  position: absolute; top: 50%; left: 50%;
  height: 135%; aspect-ratio: 0.817;
  transform: translate(-50%, -50%);
  background: var(--gray-500);
  opacity: 0.06;
  -webkit-mask: url("/assets/eight.svg") center / contain no-repeat;
          mask: url("/assets/eight.svg") center / contain no-repeat;
  pointer-events: none;
}
.engine-wires { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.engine-pulses { position: absolute; inset: 0; pointer-events: none; }
.engine-cols {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr 0.9fr;
  gap: var(--space-10);
  align-items: stretch;
}
.engine-col { display: flex; flex-direction: column; }
.engine-colhead { margin-bottom: var(--space-6); text-transform: uppercase; }
.engine-nodes { display: flex; flex-direction: column; justify-content: center; gap: var(--space-4); flex: 1; }

/* Hardware-inspired cards: hairline border + faint top-light on the surface */
.engine-node {
  background-color: color-mix(in srgb, var(--surface) 88%, var(--bg));
  background-image: linear-gradient(165deg, color-mix(in srgb, var(--ink) 5%, transparent), transparent 45%);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-4) var(--space-5);
  display: grid; gap: 2px;
  box-shadow: var(--shadow-sm), inset 0 1px 0 color-mix(in srgb, var(--ink) 6%, transparent);
  transition: border-color var(--dur-fast) var(--ease),
              opacity var(--dur-base) var(--ease),
              transform var(--dur-fast) var(--ease),
              box-shadow var(--dur-base) var(--ease),
              background-color var(--dur-fast) var(--ease);
}
.engine-node:hover {
  border-color: var(--muted);
  transform: translateY(-1px);
  background-color: color-mix(in srgb, var(--surface) 94%, var(--ink));
  box-shadow: var(--shadow-md),
              inset 0 1px 0 color-mix(in srgb, var(--ink) 8%, transparent),
              0 0 18px color-mix(in srgb, var(--ink) 5%, transparent);
}
.engine-node:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; border-color: var(--muted); }
.engine-node-name { font-weight: 700; }
.engine-node-sub { font-size: var(--text-xs); color: var(--muted); }

/* The living core — glass face, inner illumination, a breathing glow and a slow
   sheen that crosses the panel every ~18s. All of it near-imperceptible; all of
   it off under reduced motion. Layout and spacing untouched. */
.engine-core {
  position: relative;
  overflow: hidden;
  padding: var(--space-6);
  gap: var(--space-2);
  border-color: var(--border-strong);
  background-color: color-mix(in srgb, var(--surface) 92%, var(--ink));
  box-shadow:
    var(--shadow-lg),
    inset 0 1px 0 color-mix(in srgb, var(--ink) 9%, transparent),
    inset 0 0 44px color-mix(in srgb, var(--ink) 3%, transparent);
  transition: box-shadow var(--dur-slow) var(--ease), border-color var(--dur-fast) var(--ease);
}
/* breathing inner glow */
.engine-core::before {
  content: "";
  position: absolute; inset: -30%;
  background: radial-gradient(ellipse 55% 45% at 50% 42%, color-mix(in srgb, var(--ink) 5%, transparent), transparent 70%);
  opacity: 0.6;
  pointer-events: none;
}
/* glass reflection — a soft light band resting across the top face, swept by the sheen */
.engine-core::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(115deg, transparent 38%, color-mix(in srgb, var(--ink) 5%, transparent) 50%, transparent 62%),
    linear-gradient(175deg, color-mix(in srgb, var(--ink) 4%, transparent), transparent 32%);
  background-size: 300% 100%, 100% 100%;
  background-position: 120% 0, 0 0;
  background-repeat: no-repeat;
  pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
  .engine-core::before { animation: core-breathe 9s var(--ease) infinite; }
  .engine-core::after { animation: core-sheen 18s linear infinite; }
  @keyframes core-breathe {
    0%, 100% { opacity: 0.45; transform: scale(1); }
    50%      { opacity: 1;    transform: scale(1.04); }
  }
  @keyframes core-sheen {
    0%, 62%  { background-position: 120% 0, 0 0; }
    86%, 100% { background-position: -120% 0, 0 0; }
  }
}
.engine-core-brand { letter-spacing: 0.16em; }
.engine-core-8 { color: var(--eight); }
.engine-core-list { list-style: none; margin: var(--space-2) 0 0; padding: 0; display: grid; gap: var(--space-2); font-size: var(--text-sm); color: var(--muted); }
.engine-core-list li { display: flex; align-items: center; gap: var(--space-2); }
.engine-core-works {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  display: grid;
  gap: var(--space-2);
}
.engine-core-works-line { font-size: var(--text-sm); font-weight: 600; }
.engine-core-status { margin-top: var(--space-3); display: grid; gap: 2px; }
.engine-core-status-label { font-size: 0.65rem; letter-spacing: 0.1em; color: var(--muted); opacity: 0.75; }
.engine-core-status-value { display: inline-flex; align-items: center; gap: var(--space-2); color: var(--ink); }
.engine-revenue { border-color: var(--border-strong); }
.engine-revenue .engine-node-name { font-size: var(--text-lg); }
.engine-caption { margin-top: var(--space-8); max-width: var(--measure); }

/* Wires — the 8's charcoal as the resting state, ink when lit */
.engine-wires .wire {
  stroke: var(--border-strong); stroke-width: 1.5; fill: none; opacity: 0.9;
  transition: stroke var(--dur-base) var(--ease), opacity var(--dur-base) var(--ease);
}
.engine[data-focus] .wire { opacity: 0.14; }
.engine[data-focus] .engine-node { opacity: 0.55; }
.engine[data-focus] .engine-pulse { visibility: hidden; }

/* Focusing any pathway makes the core breathe up — a slight, engineered pulse */
.engine[data-focus] .engine-core {
  border-color: var(--ring);
  box-shadow:
    var(--shadow-lg),
    inset 0 1px 0 color-mix(in srgb, var(--ink) 12%, transparent),
    inset 0 0 44px color-mix(in srgb, var(--ink) 5%, transparent),
    0 0 36px color-mix(in srgb, var(--ink) 7%, transparent);
}
.engine[data-focus] .engine-core::before { opacity: 1; }

/* A source lights only its pathway into the system */
.engine[data-focus="website"] .wire.w-website,
.engine[data-focus="meta"] .wire.w-meta,
.engine[data-focus="google"] .wire.w-google,
.engine[data-focus="phone"] .wire.w-phone,
.engine[data-focus="referrals"] .wire.w-referrals,
.engine[data-focus="database"] .wire.w-database { stroke: var(--ink); opacity: 1; }
.engine[data-focus="website"] [data-node="website"],     .engine[data-focus="website"] [data-node="core"],
.engine[data-focus="meta"] [data-node="meta"],           .engine[data-focus="meta"] [data-node="core"],
.engine[data-focus="google"] [data-node="google"],       .engine[data-focus="google"] [data-node="core"],
.engine[data-focus="phone"] [data-node="phone"],         .engine[data-focus="phone"] [data-node="core"],
.engine[data-focus="referrals"] [data-node="referrals"], .engine[data-focus="referrals"] [data-node="core"],
.engine[data-focus="database"] [data-node="database"],   .engine[data-focus="database"] [data-node="core"] { opacity: 1; }

/* The core lights everything it touches */
.engine[data-focus="core"] .wire.s1,
.engine[data-focus="core"] .wire.s2 { stroke: var(--ink); opacity: 1; }
.engine[data-focus="core"] .engine-node { opacity: 1; }

/* An action lights its path through the system to revenue */
.engine[data-focus="bookings"] .wire.w-bookings,
.engine[data-focus="followup"] .wire.w-followup,
.engine[data-focus="reviews"] .wire.w-reviews,
.engine[data-focus="insights"] .wire.w-insights { stroke: var(--ink); opacity: 1; }
.engine[data-focus="bookings"] [data-node="bookings"], .engine[data-focus="bookings"] [data-node="core"], .engine[data-focus="bookings"] [data-node="revenue"],
.engine[data-focus="followup"] [data-node="followup"], .engine[data-focus="followup"] [data-node="core"], .engine[data-focus="followup"] [data-node="revenue"],
.engine[data-focus="reviews"] [data-node="reviews"],   .engine[data-focus="reviews"] [data-node="core"],  .engine[data-focus="reviews"] [data-node="revenue"],
.engine[data-focus="insights"] [data-node="insights"], .engine[data-focus="insights"] [data-node="core"], .engine[data-focus="insights"] [data-node="revenue"] { opacity: 1; }

/* Revenue lights the entire system, left to right */
.engine[data-focus="revenue"] .wire { stroke: var(--ink); opacity: 1; }
.engine[data-focus="revenue"] .wire.s1 { transition-delay: 0ms; }
.engine[data-focus="revenue"] .wire.s2 { transition-delay: 200ms; }
.engine[data-focus="revenue"] .wire.s3 { transition-delay: 400ms; }
.engine[data-focus="revenue"] .engine-node { opacity: 1; }

/* Pulses — light travelling the wires, fibre-optic: bright head, soft halo */
.engine-pulse {
  position: absolute; top: 0; left: 0;
  width: 6px; height: 6px; border-radius: var(--radius-full);
  background: var(--ink);
  box-shadow:
    0 0 3px var(--ink),
    0 0 12px color-mix(in srgb, var(--ink) 75%, transparent),
    0 0 24px color-mix(in srgb, var(--ink) 25%, transparent);
  opacity: 0;
  offset-rotate: 0deg;
}
@media (prefers-reduced-motion: no-preference) {
  .engine-pulse { animation: engine-pulse-travel 5.5s linear infinite; }
  @keyframes engine-pulse-travel {
    0%   { offset-distance: 0%;   opacity: 0; }
    5%   { opacity: 1; }
    32%  { opacity: 1; }
    38%  { offset-distance: 100%; opacity: 0; }
    100% { offset-distance: 100%; opacity: 0; }
  }
}

/* Narrow screens: vertical stack, no wires */
@media (max-width: 819px) {
  .engine-wires, .engine-pulses, .engine-eight, .engine::before { display: none; }
  .engine-cols { grid-template-columns: 1fr; gap: var(--space-6); }
  .engine-col:not(:last-child)::after {
    content: "↓";
    display: block; text-align: center;
    color: var(--muted);
    padding-top: var(--space-6);
  }
  .engine-colhead { margin-bottom: var(--space-4); }
}

/* ------------------------------------------------------------
   INTEGRATION LAYER (SYS 03) — the software story below the
   engine. Chips are monochrome hardware: lift, glow, border.
   Each chip carries data-chip as the anchor key for a future
   tooltip layer; position: relative is the anchor.
   ------------------------------------------------------------ */
.integrations {
  margin-top: var(--space-16);
  padding-top: var(--space-12);
  border-top: 1px solid var(--border);
}
.integrations-head { max-width: var(--measure); }
.integrations-title { font-size: var(--text-xl); font-weight: 700; letter-spacing: var(--tracking-heading); }
.integrations-copy { margin-top: var(--space-4); color: var(--muted); }
.integrations-groups { margin-top: var(--space-10); display: grid; gap: var(--space-8); }
@media (min-width: 820px) { .integrations-groups { grid-template-columns: repeat(3, 1fr); gap: var(--space-10); } }
.integration-group-name { text-transform: uppercase; }
.chips {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: flex; flex-wrap: wrap;
  gap: var(--space-2);
}
.chip {
  position: relative; /* tooltip anchor, later */
  display: inline-flex; align-items: center;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--muted);
  background-color: color-mix(in srgb, var(--surface) 88%, var(--bg));
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  transition: transform var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              background-color var(--dur-fast) var(--ease),
              box-shadow var(--dur-base) var(--ease);
}
.chip:hover {
  transform: translateY(-1px);
  color: var(--ink);
  border-color: var(--muted);
  background-color: var(--surface);
  box-shadow: var(--shadow-sm), 0 0 14px color-mix(in srgb, var(--ink) 6%, transparent);
}
.integrations-badge {
  margin-top: var(--space-12);
  padding-top: var(--space-10);
  border-top: 1px solid var(--border);
  display: grid; gap: var(--space-5);
  text-align: center;
}
.integrations-badge-line {
  font-weight: 800;
  font-size: clamp(1.9rem, 3.4vw + 1rem, 3.052rem);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-heading);
  color: var(--ink);
  text-wrap: balance;
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-3);
}
.integrations-badge-check { color: var(--muted); font-size: 1.25em; line-height: 1; }
.integrations-badge-sub {
  color: var(--muted);
  font-size: var(--text-lg);
  max-width: 52ch;
  margin-inline: auto;
}

/* Editorial statement — the positioning, restated */
.soft-stays {
  margin-top: var(--space-20);
  border-top: 1px solid var(--border);
  padding-top: var(--space-16);
  text-align: center;
}
.soft-stays-title {
  font-size: clamp(2.4rem, 5vw + 1rem, 3.9rem);
  font-weight: 800;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-heading);
  text-wrap: balance;
}
.soft-stays-copy {
  margin-top: var(--space-6);
  color: var(--muted);
  max-width: 60ch;
  margin-inline: auto;
}

/* ============================================================
   INDUSTRIES (SYS 05)
   ============================================================ */
.verticals { display: grid; gap: var(--space-8); margin-top: var(--space-12); }
@media (min-width: 700px) { .verticals { grid-template-columns: 1fr 1fr; gap: var(--space-10); } }
@media (min-width: 1080px) { .verticals { grid-template-columns: repeat(4, 1fr); } }
.vertical { border-top: 1px solid var(--border); padding-top: var(--space-5); }
.vertical-name { margin-top: var(--space-3); }
.vertical-copy { color: var(--muted); margin-top: var(--space-2); max-width: 40ch; }
.vertical-outcome { font-weight: 600; font-size: var(--text-sm); margin-top: var(--space-4); }

/* ============================================================
   BOOK — trust ticks
   ============================================================ */
.book-ticks {
  list-style: none;
  display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-6);
  margin: var(--space-6) 0 0; padding: 0;
  color: var(--muted); font-size: var(--text-sm);
}
.book-ticks li { display: inline-flex; gap: var(--space-2); align-items: baseline; }
.book-ticks li span { color: var(--ink); font-weight: 700; }

/* ============================================================
   CHAPTER 03 — INSIDE THE OPERATING SYSTEM (capabilities)
   Editorial reveals with CSS-built vignettes. No icons, no images.
   ============================================================ */
.caps { display: grid; gap: var(--space-20); margin-top: var(--space-16); }
.cap { display: grid; gap: var(--space-8); align-items: center; }
@media (min-width: 900px) {
  .cap { grid-template-columns: 5fr 6fr; gap: var(--space-16); }
  .cap:nth-of-type(even) .cap-copy { order: 2; }
  .cap:nth-of-type(even) .cap-visual { order: 1; }
}
.cap h3 { margin-top: var(--space-3); }
.cap-desc { color: var(--muted); margin-top: var(--space-4); max-width: 46ch; }
.cap-visual {
  position: relative;
  background-color: color-mix(in srgb, var(--surface) 80%, var(--bg));
  background-image: linear-gradient(165deg, color-mix(in srgb, var(--ink) 4%, transparent), transparent 50%);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  min-height: 300px;
  display: grid; place-items: center;
  overflow: hidden;
}

/* CAP 01 — conversational UI */
.v-chat { width: min(360px, 100%); display: grid; gap: var(--space-3); }
.v-chat-status { display: flex; gap: var(--space-2); align-items: center; margin: 0 0 var(--space-2); }
.v-msg { padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); font-size: var(--text-sm); max-width: 85%; margin: 0; }
.v-msg-in { background: var(--surface-2); justify-self: start; border-bottom-left-radius: var(--radius-xs); }
.v-msg-ben { background: var(--accent); color: var(--accent-contrast); justify-self: end; border-bottom-right-radius: var(--radius-xs); }
.v-typing { display: inline-flex; gap: 4px; padding: var(--space-3) var(--space-4); background: var(--surface-2); border-radius: var(--radius-md); justify-self: start; margin: 0; }
.v-typing span { width: 5px; height: 5px; border-radius: var(--radius-full); background: var(--muted); opacity: 0.4; }
@media (prefers-reduced-motion: no-preference) {
  .v-typing span { animation: v-blink 1.3s var(--ease) infinite; }
  .v-typing span:nth-child(2) { animation-delay: 0.2s; }
  .v-typing span:nth-child(3) { animation-delay: 0.4s; }
  @keyframes v-blink { 0%, 60%, 100% { opacity: 0.35; } 30% { opacity: 1; } }
}

/* CAP 02 — call flow */
.v-call { width: min(400px, 100%); display: grid; gap: var(--space-3); font-size: var(--text-sm); }
.v-call-head { display: flex; justify-content: space-between; margin: 0; }
.v-line {
  display: grid; gap: 4px;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--surface-2) 70%, transparent);
}
.v-line-ai { border-color: var(--border-strong); }
.v-chip {
  justify-self: start; margin: var(--space-2) 0 0;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-full);
}

/* CAP 03 — browser chrome */
.v-browser {
  width: min(420px, 100%);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}
.v-browser-bar {
  display: flex; gap: var(--space-2); align-items: center;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.v-dot { width: 8px; height: 8px; border-radius: var(--radius-full); background: var(--border-strong); }
.v-url {
  flex: 1; text-align: center;
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--muted);
  background: var(--bg); border-radius: var(--radius-xs);
  padding: 4px var(--space-3); margin-left: var(--space-2);
}
.v-page { padding: var(--space-6); display: grid; gap: var(--space-3); }
.v-h { height: 16px; width: 68%; background: var(--ink); opacity: 0.85; border-radius: 3px; }
.v-t { height: 6px; background: var(--muted); opacity: 0.4; border-radius: 3px; }
.v-cta { width: 112px; height: 28px; border-radius: var(--radius-full); background: var(--accent); opacity: 0.9; margin-top: var(--space-2); }
.v-bubble { justify-self: end; width: 34px; height: 34px; border-radius: var(--radius-full); background: var(--surface-2); border: 1px solid var(--border-strong); }

/* CAP 04 — floating dashboard */
.v-dash {
  width: min(440px, 100%);
  display: grid; grid-template-columns: 44px 1fr;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}
.v-dash-side {
  background: var(--surface-2);
  border-right: 1px solid var(--border);
  display: grid; gap: var(--space-3);
  padding: var(--space-4) 0;
  justify-items: center; align-content: start;
}
.v-dash-side i { width: 16px; height: 16px; border-radius: 4px; background: var(--border-strong); }
.v-dash-main { padding: var(--space-5); display: grid; gap: var(--space-4); }
.v-dash-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.v-tile { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: var(--space-3); display: grid; gap: 2px; }
.v-tile b { font-size: var(--text-lg); line-height: 1; }
.v-tile small { color: var(--muted); font-size: var(--text-xs); }
.v-bars { display: flex; gap: var(--space-2); align-items: flex-end; height: 72px; padding-top: var(--space-3); border-top: 1px solid var(--border); }
.v-bars i { flex: 1; background: var(--border-strong); border-radius: 2px 2px 0 0; }

/* CAP 05 — workflow nodes */
.v-flow { width: min(440px, 100%); position: relative; display: flex; justify-content: space-between; align-items: center; }
.v-flow::before {
  content: ""; position: absolute; left: 6%; right: 6%; top: 50%;
  height: 1px; background: var(--border-strong);
}
.v-node {
  position: relative; z-index: 1;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--muted); letter-spacing: 0.04em;
}
.v-flow-pulse {
  position: absolute; top: 50%; left: 6%;
  width: 5px; height: 5px; margin-top: -2px;
  border-radius: var(--radius-full);
  background: var(--ink);
  box-shadow: 0 0 6px color-mix(in srgb, var(--ink) 55%, transparent);
  opacity: 0; z-index: 0;
}
@media (prefers-reduced-motion: no-preference) {
  .v-flow-pulse { animation: v-flow-run 4.5s linear infinite; }
  @keyframes v-flow-run {
    0%   { left: 6%; opacity: 0; }
    8%   { opacity: 0.9; }
    78%  { opacity: 0.9; }
    90%  { left: calc(94% - 5px); opacity: 0; }
    100% { left: calc(94% - 5px); opacity: 0; }
  }
}

/* Capability index — the rest of the platform, quiet rows */
.cap-index { margin-top: var(--space-20); border-top: 1px solid var(--border); }
.cap-row { display: grid; gap: var(--space-2); padding-block: var(--space-6); border-bottom: 1px solid var(--border); }
@media (min-width: 820px) { .cap-row { grid-template-columns: 120px 240px 1fr; align-items: baseline; gap: var(--space-6); } }
.cap-row-name { font-weight: 700; }
.cap-row p { color: var(--muted); margin: 0; max-width: var(--measure); }

/* ============================================================
   CHAPTER 04 — AI EMPLOYEE FRAMEWORK + roster additions
   ============================================================ */
.framework { margin: var(--space-12) 0 var(--space-16); display: grid; justify-items: center; }
.fw-core {
  text-align: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background-color: color-mix(in srgb, var(--surface) 88%, var(--bg));
  background-image: linear-gradient(165deg, color-mix(in srgb, var(--ink) 5%, transparent), transparent 45%);
  padding: var(--space-5) var(--space-10);
  box-shadow: var(--shadow-md);
}
.fw-core-sub { color: var(--muted); font-size: var(--text-sm); margin-top: var(--space-2); }
.fw-spine { width: 1px; height: var(--space-8); background: var(--border-strong); }
.fw-modules { display: grid; gap: var(--space-4); width: 100%; }
@media (min-width: 820px) { .fw-modules { grid-template-columns: repeat(3, 1fr); } }
.fw-module {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-5);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}
.fw-module-copy { color: var(--muted); font-size: var(--text-sm); margin-top: var(--space-2); }
.fw-module-future { opacity: 0.6; border-style: dashed; }
.module-future { opacity: 0.55; }

/* Module specification row — quiet hardware-spec voice (Tyla Health) */
.module-specs {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: var(--space-4) 0 0;
  border-top: 1px solid var(--border);
  display: grid;
  gap: var(--space-3) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--muted);
  max-width: 35rem;
}
@media (min-width: 600px) { .module-specs { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 900px) { .module-specs { grid-column: 3; } }

/* ============================================================
   CHAPTER 06 — INSIGHTS teaser
   ============================================================ */
.topics { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }
.insight-row {
  display: grid; gap: var(--space-3);
  margin-top: var(--space-10);
  padding-block: var(--space-6);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  color: inherit; text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease);
}
@media (min-width: 820px) { .insight-row { grid-template-columns: 200px 1fr 90px; align-items: center; gap: var(--space-8); } }
.insight-row:hover { background: color-mix(in srgb, var(--surface) 55%, transparent); }
.insight-row:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }
.insight-row h3 { font-size: var(--text-xl); }
.insight-row-body p { margin-top: var(--space-2); max-width: var(--measure); }

/* ============================================================
   CLOSING STATEMENT — the category, restated at the foundation.
   Huge whitespace, large typography, nothing else. The last
   thing read before the footer begins. (R2.3)
   ============================================================ */
.footer-statement { padding-block: var(--space-32); }
@media (min-width: 900px) {
  .footer-statement {
    padding-block: calc(var(--space-32) + var(--space-20)) calc(var(--space-32) + var(--space-12));
  }
}
.fs-line {
  font-size: clamp(2.4rem, 4.6vw + 1rem, 5rem);
  font-weight: 850;
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-tight);
  max-width: 24ch;
  text-wrap: balance;
  color: var(--muted);
}
.fs-line-strong { margin-top: var(--space-8); color: var(--ink); }

/* ============================================================
   FOUNDATION — scrolling into the closing statement, the "8"
   resolves. Not brighter: more defined. The operating system
   quietly powering everything beneath the surface. (R2.3)
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .eight-bg { transition: opacity 1400ms var(--ease); }
}
body.at-foundation .eight-bg { opacity: calc(var(--eight-opacity) * 1.7); }

/* ============================================================
   PRODUCTION ADDITIONS (V2 go-live) — form status + footer legal
   ============================================================ */
.book-status {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}
.book-status.is-ok  { color: var(--ink); }
.book-status.is-err { color: var(--muted); }
.book-form button[disabled] { opacity: 0.6; cursor: progress; }

.footer-legal { display: inline-flex; flex-wrap: wrap; gap: var(--space-2); color: var(--muted); }
.footer-legal a { color: var(--muted); }
.footer-legal a:hover { color: var(--ink); }

/* ============================================================
   LEGAL PAGES (Privacy / Terms / Cookies) — quiet prose
   ============================================================ */
.legal { max-width: 720px; padding-block: var(--space-24) var(--space-24); }
.legal .legal-updated { color: var(--muted); font-size: var(--text-sm); margin-top: var(--space-3); }
.legal h2 { margin-top: var(--space-12); font-size: var(--text-xl); }
.legal p, .legal li { color: var(--muted); line-height: var(--leading-body); }
.legal p { margin-top: var(--space-4); max-width: var(--measure); }
.legal ul { margin: var(--space-4) 0 0; padding-left: var(--space-6); max-width: var(--measure); }
.legal li { margin-top: var(--space-2); }
.legal a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--border-strong); transition: border-color var(--dur-fast) var(--ease); }
.legal a:hover { border-color: var(--ink); }
.legal strong { color: var(--ink); font-weight: 650; }